Ecclesiastes 1:3-7

3What does a man gain from all his labor, at which he toils under the sun?4Generations come and generations go, but the earth remains forever.5The sun rises and the sun sets; it hurries back to where it rises.6The wind blows southward, then turns northward; round and round it swirls, ever returning on its course.7All the rivers flow into the sea, yet the sea is never full; to the place from which the streams come, there again they flow.